Note on the occurrence in Tasmania of the freshwater crab, Hymensoma lacustris, Chilton

Professor T. Thomson Flynn, of the University of Tasmania, of Hobart, has been good enough to send me some specimens of a small crab obtained by him in North- West Tasmania, which he thought belonged to the species Hymenosoma lacustris, Chilton, though they appeared to differ from the published descriptions in the shape of the rostrum and in some other points. The few specimens he collected were found nestling in the crevices of rotting wood in a very small creek in the middle of an open paddock near Flowerdale.
This species was originally described from specimens obtained in Lake Takapuna, near Auckland, New Zealand, and has since been recorded from other localities in New Zealand, also from Norfolk Island, Lord Howe Island, and from two localities in Victoria, Australia. Its occurrence in Tasmania is additional evidence of its wide distribution, and its antiquity. I have compared the Tasmanian specimens with those from the other localities, and consider that they should be placed in the same species.